body {
  margin: 0;
  background-color: #f8f9fb;
}

header {
  width: 100%;
  background-color: aliceblue;
  padding: 20px;
  font-size: 20px;
  font-weight: 500;
}

content {
  width: 100%;
  height: 500px;
  background-color: #b8c8e4;
  padding: 20px;
  font-size: 14px;
  display: block;
}

footer {
  width: 100%;
  height: 100%;
  padding: 20px;
}